Electrical apparatus

Details Electrical apparatus Electrical apparatus

G - Physics

01

R

324/58.3

G01R 31/02 (2006.01) H02H 3/24 (2006.01) H02H 7/125 (2006.01)

Patent

CA 1257907

ABSTRACT OF THE DISCLOSURE An electrical apparatus for monitoring electrical continuity includes a number of input circuits each associated with a respective arm of a multi-phase rectifier circuit the continuity of which is to be monitored. Each input circuit includes a comparator which generates a train of pulses P while an input current persists in the arm. If a discontinuity arises in an arm for a first preset interval of time a monostable in that arm generates a first trigger signal. If the discontinuity persists for a further preset interval of time another monostable, common to all the arms, triggers an alarm via a bistable circuit.

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